First Commit

libraries/mediaplayer/test/build.gradle.kts

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+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ * Copyright 2023-2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "io.element.android.libraries.mediaplayer.test"
+}
+
+dependencies {
+    api(projects.libraries.mediaplayer.api)
+    implementation(projects.tests.testutils)
+
+    implementation(libs.coroutines.test)
+    implementation(libs.test.truth)
+}

libraries/mediaplayer/test/src/main/kotlin/io/element/android/libraries/mediaplayer/test/FakeMediaPlayer.kt

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+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ * Copyright 2023-2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.mediaplayer.test
+
+import io.element.android.libraries.mediaplayer.api.MediaPlayer
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+
+/**
+ * Fake implementation of [MediaPlayer] for testing purposes.
+ */
+class FakeMediaPlayer(
+    private val fakeTotalDurationMs: Long = 10_000L,
+    private val fakePlayedDurationMs: Long = 1000L,
+) : MediaPlayer {
+    private val _state = MutableStateFlow(
+        MediaPlayer.State(
+            isReady = false,
+            isPlaying = false,
+            isEnded = false,
+            mediaId = null,
+            currentPosition = 0L,
+            duration = null
+        )
+    )
+
+    override val state: StateFlow<MediaPlayer.State> = _state.asStateFlow()
+
+    override suspend fun setMedia(
+        uri: String,
+        mediaId: String,
+        mimeType: String,
+        startPositionMs: Long,
+    ): MediaPlayer.State {
+        _state.update {
+            it.copy(
+                isReady = false,
+                isPlaying = false,
+                isEnded = false,
+                mediaId = mediaId,
+                currentPosition = startPositionMs,
+                duration = null,
+            )
+        }
+        delay(1) // fake delay to simulate prepare() call.
+        _state.update {
+            it.copy(
+                isReady = true,
+                duration = fakeTotalDurationMs,
+            )
+        }
+        return _state.value
+    }
+
+    override fun play() {
+        _state.update {
+            val newPosition = it.currentPosition + fakePlayedDurationMs
+            if (newPosition < fakeTotalDurationMs) {
+                it.copy(
+                    isPlaying = true,
+                    currentPosition = newPosition,
+                )
+            } else {
+                it.copy(
+                    isReady = false,
+                    isPlaying = false,
+                    isEnded = true,
+                    currentPosition = fakeTotalDurationMs,
+                )
+            }
+        }
+    }
+
+    override fun pause() {
+        _state.update {
+            it.copy(
+                isPlaying = false,
+            )
+        }
+    }
+
+    override fun seekTo(positionMs: Long) {
+        _state.update {
+            it.copy(
+                currentPosition = positionMs,
+            )
+        }
+    }
+
+    override fun close() {
+        // no-op
+    }
+}